Health : Healthy eating for a better lifestyle

With many countries now seeing a rapid rise in obesity among infants and children, in May 2014 WHO set up the Commission on ending childhood obesity. We publish its set of policy options and strategies to promote diversified, safe and healthy diets at all stages of life

Consuming a healthy diet throughout the life course helps prevent malnutrition in all its forms as well as a range of non- communicable diseases and conditions. But the increased production of processed food, rapid urbanisation and changing lifestyles have led to a shift in dietary patterns. People are now consuming more food high in energy, fats, free sugars or salt/sodium, and many do not eat enough fruit, vegetables and dietary fibre such as whole grains.

The exact make-up of a diversified, balanced and healthy diet will vary depending on individual needs (e.g. age, gender, lifestyle, degree of physical activity), cultural context, locally available foods and dietary customs. But basic principles of what constitute a healthy diet remain the same.

FOR ADULTS

A healthy diet contains:
  • Fruits, vegetables, legumes (e.g. lentils, beans), nuts and whole grains (e.g. unprocessed maize, millet, oats, wheat, brown rice).
  • At least 400 g (5 portions) of fruits and vegetables a day (2). Potatoes, sweet potatoes, cassava and other starchy roots are not classified as fruits or vegetables.
  • Less than 10 percent of total energy intake from free sugars (2, 5) which is equivalent to 50 g (or around 12 level teaspoons) for a person of healthy body weight consuming approximately 2000 calories per day, but ideally less than 5 percent of total energy intake for additional health benefits (5). Most free sugars are added to foods or drinks by the manufacturer, cook or consumer, and can also be found in sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates.
  • Less than 30 percent of total energy intake from fats (1, 2, 3). Unsaturated fats (e.g. found in fish, avocado, nuts, sunflower, canola and olive oils) are preferable to saturated fats (e.g. found in fatty meat, butter, palm and coconut oil, cream, cheese, ghee and lard) (3). Industrial trans fats (found in processed food, fast food, snack food, fried food, frozen pizza, pies, cookies, margarines and spreads) are not part of a healthy diet.
  • Less than 5 g of salt (equivalent to approximately 1 teaspoon) per day (6) and use iodized salt.

FOR INFANTS AND YOUNG CHILDREN

In the fi rst 2 years of a child’s life, optimal nutrition fosters healthy growth and improves cognitive development. It also reduces the risk of becoming overweight or obese and developing NCDs later in life.

Advice on a healthy diet for infants and children is similar to that for adults, but the following elements are also important.

  • Infants should be breastfed exclusively during the first six months of life.
  • Infants should be breastfed continuously until 2 years of age and beyond.
  • From 6 months of age, breast milk should be complemented with a variety of adequate, safe and nutrient dense complementary foods. Salt and sugars should not be added to complementary foods.

PRACTICAL ADVICE ON MAINTAINING A HEALTHY DIET

Fruits and vegetables

Eating at least 400 g, or 5 portions, of fruits and vegetables per day reduces the risk of NCDs and helps ensure an adequate daily intake of dietary fi bre.

In order to improve fruit and vegetable consumption you can:

  • Always include vegetables in your meals
  • Eat fresh fruits and raw vegetables as snacks
  • Eat fresh fruits and vegetables in season
  • Eat a variety of choices of fruits and vegetables.

Fats

Reducing the amount of total fat intake to less than 30 percent of total energy intake helps prevent unhealthy weight gain in the adult population.

Also, the risk of developing NCDs is lowered by reducing saturated fats to less than 10 percent of total energy intake, and trans fats to less than 1 percent of total energy intake, and replacing both with unsaturated fats.

Fat intake can be reduced by:
  • Changing how you cook – remove the fatty part of meat; use vegetable oil (not animal oil); and boil, steam or bake rather than fry;
  • Avoiding processed foods containing trans fats; and
  • Limiting the consumption of foods containing high amounts of saturated fats (e.g. cheese, ice cream, fatty meat).
Salt, sodium and potassium

Most people consume too much sodium through salt (corresponding to an average of 9–12 g of salt per day) and not enough potassium. High salt consumption and insufficient potassium intake (less than 3.5 g) contribute to high blood pressure, which in turn increases the risk of heart disease and stroke (6, 10).

Over 1.7 million deaths could be prevented each year if people’s salt consumption were reduced to the recommended level of less than 5 g per day. People are often unaware of the amount of salt they consume. In many countries, most salt comes from processed foods (e.g. ready meals; processed meats like bacon, ham and salami; cheese and salty snacks) or from food consumed frequently in large amounts (e.g. bread). Salt is also added to food during cooking (e.g. bouillon, stock cubes, soy sauce and fi sh sauce) or at the table (e.g. table salt).

Most people consume too much sodium through salt (corresponding to an average of 9–12 g of salt per day) and not enough potassium. High salt consumption and insufficient potassium intake (less than 3.5 g) contribute to high blood pressure

You can reduce salt consumption by:
  • Not adding salt, soy sauce or fish sauce during the preparation of food
  • Not having salt on the table
  • Limiting the consumption of salty snacks
  • Choosing products with lower sodium content.
  • Potassium, which can mitigate the negative effects of elevated sodium consumption on blood pressure, can be increased with consumption of fresh fruits and vegetables.

Sugars

The intake of free sugars should be reduced throughout the lifecourse. Evidence indicates that in both adults and children, the intake of free sugars should be reduced to less than 10 percent of total energy intake, and that a reduction to less than 5 percent of total energy intake provides additional health benefits.

Sugars intake can be reduced by:
  • Limiting the consumption of foods and drinks containing high amounts of sugars (e.g. sugar- sweetened beverages, sugary snacks and candies); and eating fresh fruits and raw vegetables as snacks instead of sugary snacks.